scholarly journals EXPERIENCE GAINED DURING EXAMINATION OF ELECTROMAGNETIC COMPATIBILITY BETWEEN ROLLING STOCK AND AXLE COUNTERS

2018 ◽  
Vol 0 (179) ◽  
Author(s):  
Andrzej Białoń ◽  
Łukasz Zawadka ◽  
Dominik Adamski
Keyword(s):  
Electromagnetic Compatibility ◽  
Rolling Stock

scholarly journals Critical Review of EMC Standards for the Measurement of Radiated Electromagnetic Emissions from Transit Line and Rolling Stock

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 759
Author(s):  
Andrea Mariscotti
Keyword(s):  
Time Distribution ◽  
Communication Systems ◽  
Electromagnetic Compatibility ◽  
Transportation Systems ◽  
Operating Conditions ◽  
Rolling Stock ◽  
Intrinsic Variability ◽  
Statistical Characterization ◽  
Electromagnetic Emissions

Accurate and comprehensive methods for the assessment of radiated electromagnetic emissions in modern electric transportation systems are a necessity. The characteristics and susceptibility of modern victim signaling and communication radio services, operating within and outside the right-of-way, require an update of the measurement methods integrating or replacing the swept frequency technique with time domain approaches. Applicable standards are the EN 50121 (equivalent to the IEC 62236) and Urban Mass Transport Association (UMTA) with additional specifications from project contracts. This work discusses the standardized methods and settings, and the representative operating conditions, highlighting areas where improvements are possible and opportune (statistical characterization of measurement results, identification and distinction of emissions and line resonances, and narrowband and broadband phenomena). In particular for the Electromagnetic Compatibility (EMC) assessment with new Digital Communication Systems, the characterization of time distribution of spectral properties is discussed, e.g., by means of Amplitude Probability Distribution and including time distribution information. The problem of determination of site and setup uncertainty and repeatability is also discussed, observing on one hand the lack of clear indications in standards and, on the other hand, the non-ideality and intrinsic variability of measurement conditions (e.g., rolling stock operating conditions, synchronization issues, and electric arc intermittence).

scholarly journals Research on measurement of electromagnetic fields generated by electric and combustion powered rolling stock.

2019 ◽  
Vol 294 ◽  
pp. 03016
Author(s):  
Dominik Adamski ◽  
Krzysztof Ortel ◽  
Juliusz Furman
Keyword(s):  
Electromagnetic Compatibility ◽  
Technical Specification ◽  
Test Methods ◽  
Rolling Stock ◽  
Network Resources ◽  
Testing Procedures ◽  
Detection Systems ◽  
Potential Source ◽  
Interference Test ◽  
Wheel Sensor

Axle counters are more and more often applied in train detection systems. The wheel sensor is a main part of each axle counter system. In parallel, more and more complex railway vehicles, especially traction ones, are a potential source of interferences influencing the operation of these train detection systems. It is the reason to verify the electromagnetic compatibility (EMC) between the signalling equipment, particularly train detection systems and new vehicles in the process of obtaining the permission for their exploitation. The measurement of interfering magnetic fields generated by vehicles is one of tests to be carried out. For the simplification and unification purpose of the applied interference test methods the EN 50238 standard and TS 50238-3 technical specification were developed. The specification defines unified testing procedures. However, it is necessary to verify if it may replace different testing methods used in particular European states. It is the goal of the European research project financed from the TEN-T network resources.

scholarly journals ELECTROMAGNETIC COMPATIBILITY OF RES ON RAILWAY

2020 ◽  
pp. 7-22
Author(s):  
Popov V ◽  
Shevchenko A
Keyword(s):  
Communication Networks ◽  
Mobile Communication ◽  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Rolling Stock ◽  
Radio System ◽  
Mobile Communication Networks ◽  
High Level ◽  
Cellular Mobile ◽  
Cellular Mobile Communication

This work reviews the main related problems of electromagnetic compatibility (EMC) of the locomotive radio system GSM-R in modern railway transport. The typical internal electromagnetic interference (EMI), caused by the high density of the equipment layout in the rolling stock, and external electromagnetic interference generated by public cellular mobile communication networks and other radio systems are considered. The results of experiments to determine the parameters of public cellular mobile communication networks along the selected railway section show a rather high level of signals that are EMI for GSM-R and affecting on EMC.

scholarly journals Impact of rail impedance intrinsic variability on railway system operation, EMC and safety

2021 ◽  
Vol 11 (1) ◽  
pp. 17
Author(s):  
Andrea Mariscotti
Keyword(s):  
Electromagnetic Compatibility ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Transportation Systems ◽  
Rolling Stock ◽  
Interface Element ◽  
Induced Voltage ◽  
Intrinsic Variability ◽  
Electrical Parameters ◽  
Experimental Values

Running rails in electrified transportation systems are the interface element for several phenomena related to system performance, electromagnetic compatibility and safety: useful voltage at rolling stock, short circuit current, induced voltage, stray current, and track circuit operation. This work presents the physical and mathematical groundings of rail electrical parameters (dc and ac resistance, ac internal and external inductance) and experimental results available in the literature, discussing variability and reliability for each interface. The results consist thus of the identification of the relevant rails longitudinal electrical parameters, the presentation of a set of reliable experimental values, and the discussion of the best approach to manage their variability and uncertainty.

scholarly journals NORMS AND METHODS FOR DETERMINING THE ELECTROMAGNETIC COMPATIBILITY OF MODERN AUTOMATIC LOCOMOTIVE SIGNALING SYSTEMS AND ELECTRIC ROLLING STOCK WITH AN ASYNCHRONOUS TRACTION DRIVE ON THE SUBWAY

2021 ◽  
Vol 7 (4) ◽  
pp. 503-521
Author(s):  
A. G. Kabetsky ◽  
◽  
A. D. Manakov ◽  
Keyword(s):  
Remote Control ◽  
Control Systems ◽  
Electromagnetic Interference ◽  
Electromagnetic Compatibility ◽  
Speed Control ◽  
Rolling Stock ◽  
Traction Drive ◽  
Signaling Systems ◽  
Electric Rolling Stock ◽  
Traction Current

The article provides a brief overview of the development and application of automatic control systems for subway trains. Modern automatic locomotive signaling systems featuring automatic speed control with signal transmission based on double-phase-diff erence modulation are analyzed. The introduction of electric rolling stock with an asynchronous traction drive and advanced train traffi c automation and remote control systems at the St. Petersburg Metro initiates the drive to ensure their electromagnetic compatibility. For the subway train traffi c automation and remote control systems, there have been no acceptance criteria for electromagnetic interference that occur in their operating range when electric rolling stock with an asynchronous traction drive is put into operation. The article identifi es the main sources of conducted electromagnetic interference and the routes of their penetration into the receive path of automatic locomotive signaling devices with automatic speed control. A method is proposed for determining the limits of hazardous and interfering eff ects (immunity limits) for automatic train signaling systems with automatic speed regulation of the systems of the BARS automatic speed control unit with phase-diff erence modulation and the upgraded PA-M (ПА-М) train automation with phase-diff erence modulation for the St. Petersburg Metro lines. A method is given for the transition from the immunity limits of automatic locomotive signaling systems with automatic speed control to the emission limits of electric rolling stock at diff erent traction current unbalance factors. A technique for measuring traction current at high-potential points on electric rolling stock is considered. A technique for assessing the levels of conducted electromagnetic interference from electric rolling stock by calculating the eff ective value in a sliding window of a pre-fi ltered traction current signal of an electric rolling stock is presented.

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